RFTLYS EA1A Headphone Amplifier & Integrated Amp Wireless Bluetooth EL34 Tube Class A Single-Ended (Black)

I got this two days ago and have used it a lot since then. First off, it was extremely well packaged. The tubes were in their sockets but very highly cushioned. The manual was in Chinese so not helpful to me. I have played it with the stock EL34 tubes and also with a set of JJ KT77's. Both worked very well. I have no need of this amp's bluetooth capability. It is running from an Emotiva PT-100 preamp (ALAC files, CDs and vinyl) to NHT Super One 2.1 87 db/8 ohm speakers. The amp is solidly build - heavy, solid tube sockets, tightly operating controls, decent speaker and RCA terminals. I've had some tubes in my preamps before but never a full tube amp. I was a bit skeptical regarding its 8 watts ability to drive my moderately inefficient NHTs, but the EA1A quickly put that to rest driving them to room filling levels. I love the sound. There is virtually no noise, there is a sparkle to the highs the midrange is beautiful, and percussion has good attack altogether creating a sense if immediacy to the sound. I could hear the skins of drums and fingers slide on strings. There is depth and soundstage to spare. It sounded great on the acoustic Carole King / James Taylor concert, on Katie Melua, Dire Straits, and Led Zeppelin. I really have nothing negative to say about the EA1A at this point. Will it be reliable? The solid construction makes me hopeful on that account. It's hard for me to believe this $260 amp creates such beautiful sound making my modest stereo sound like a million bucks.

I use this amp primarily with my Sennheiser HD-800. Sounds great with it. Also tried it with a friend's Klipsch Cornwall speakers which are very efficient. The mids and highs are sweet. The lows are good. The Bluetooth feature works well. Excellent value for a tube amp. Price from this Amazon seller is better than other sites.

I had this unit for about 4 months. I don't know if there is another pure tube amp offers the same quality and function below $300. It has enough power to drive a pair of KEF Q150. This particular model is mass-produced which explains its low price point. You can tell it from the fact that 4 of 5 stock tubes have RFTLYS label on it. The stock tubes are some of the best looking ones I have seen that are made in China, and they sound quite well too. For tube rolling, there are plenty of affordable choices for 6n1, 12AX7 and EL84. The build quality is also very solid and does not look or feel cheap by any stretch. its bluetooth module connects to computers and mobile devices very easily and sounds well.

First off, for the money it sounds great. They're driving my reference speakers nicely. One of the tubes is bad I think, so the left channel makes a quite frying noise every few seconds. It's not loud enough to make it annoying, since it doesn't really appear through the audio, but you can hear it anytime the audio goes quiet. The blue LED that comes on when Bluetooth is connected is way too bright and unnecessary. The channel selector switch makes noise when switching, but for this price I don't expect anything better.

Excellent sounding! Would easily buy again. The stock tubes are not bad either.

superb quality device for the price. Even the packaging was top notch.